Ipad 4th gen headphone jack not working properly

Any ideas on this ?

Every time I put put my headphone jack in all I could hear is hiss sounds and when I try to maximize the volume I could hear the music but its too loud for me .

If I try to move my ipad 4th gen in stand it goes back normal , if I put it down or any other position I want to try it starts to give weird sounds again . ( plugged headphones )

It's my first time buying a tablet so I have little information about tablets and how to solve this .

Is it hardware or software issues or dust , it's been a week and half since I bought the ipad .

I'm quite satisfied with the buy but if it won't work well I guess I'm gonna be having a :( face .